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Multi-functional DNA-based synthesis of SWNTs@(TiO2/Ag/Au) nanocomposites for enhanced light-harvesting and charge collection in DSSCs

机译:基于多功能DNA的SWNTS @(TiO2 / AG / Au)纳米复合材料的合成,用于增强DSSC的光收集和收集收集

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摘要

The performances of photovoltaic devices can be improved by increasing light-harvesting and charge collection respectively. The design and synthesis of nanocomposites with the ability of enhancing the generation and collection of the photo-generated electrons provide a significant way to improve the power conversion efficiency (PCE). Herein, SWNTs@(TiO2/Ag/Au) nanocomposites were synthesized and successfully integrated into photoanode films of dye-sensitized solar cells (DSSCs) to improve the power conversion efficiency. The synthesis processes were based on multi-functional DNA. DNA not only works as a dispersing agent preventing SWNTs bundling but also as a sacrificial mold assembling TiO2, Ag and Au nanoparticles on the surface of the SWNTs. The synthesized SWNTs@(TiO2/Ag/Au) nanocomposites enhance the charge collection and light-harvesting of DSSCs simultaneously. With 2.45 wt% SWNTs@(TiO2/Ag/Au) nanocomposites incorporating into the photoanode films, the PCE of the DSSCs increases from 6.8% to 8.3%.
机译:通过分别增加光收集和充电来提高光伏器件的性能。纳米复合材料的设计和合成具有增强光生电子的产生和集合的能力提供了提高功率转换效率(PCE)的显着方式。在此,合成SWNT @(TiO2 / Ag / Au)纳米复合材料并成功地集成到染料敏化太阳能电池(DSSCs)的光电膜中,以提高功率转换效率。合成方法基于多功能DNA。 DNA不仅用作防止扫描剂的分散剂,还用作SWNT表面上的牺牲模具组装TiO 2,Ag和Au纳米颗粒。合成的SWNTS @(TiO2 / Ag / Au)纳米复合材料同时增强了DSSC的电荷收集和光收集。含有2.45wt%的SWNT @(TiO2 / Ag / Au)纳米复合材料,该纳米复合材料掺入光电膜中,DSSC的PCE从6.8%增加到8.3%。

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  • 来源
    《RSC Advances》 |2015年第8期|共7页
  • 作者单位

    Beihang Univ Sch Mat Sci &

    Engn Beijing 100191 Peoples R China;

    Beihang Univ Sch Mat Sci &

    Engn Beijing 100191 Peoples R China;

    Beihang Univ Sch Mat Sci &

    Engn Beijing 100191 Peoples R China;

    Beihang Univ Sch Mat Sci &

    Engn Beijing 100191 Peoples R China;

    Beihang Univ Sch Mat Sci &

    Engn Beijing 100191 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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